1 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. caroline.murphy@kcl.ac.uk.
2 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. Joanna.kelly@kcl.ac.uk.
3 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. john.hodsoll@kcl.ac.uk.
4 Biomedical Research Centre for Mental Health, South London and Maudsley NHS Trust, London, UK. john.hodsoll@kcl.ac.uk.
5 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. evangelos.georgiou@kcl.ac.uk.
6 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. peter.l.morgan@kcl.ac.uk.
7 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. chris_rowson@hotmail.com.
8 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. victorialcole@gmail.com.
9 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. f.jichi@ucl.ac.uk.
10 Biostatistics Group, University College London Hospitals/University College London Research Support Centre, University College London, Gower St., London, WC1E 6BT, UK. f.jichi@ucl.ac.uk.
11 King's Clinical Trials Unit at KHP, Institute of Psychiatry, King's College London, London, UK. Andrew.pickles@kcl.ac.uk.
12 Biomedical Research Centre for Mental Health, South London and Maudsley NHS Trust, London, UK. Andrew.pickles@kcl.ac.uk.